A micro-library for taking screenshots from a running HTML5 video. Built to work together with getUserMedia.js
$ npm install --save capture-video-frameHTML:
<script src="capture-video-frame.js"></script>
<video id="my-video" autoplay>
<source src="movie.mp4" type="video/mp4">
</video>
<img id="my-screenshot" />JavaScript:
var frame = captureVideoFrame('my-video-id', 'png');
// Show the image
var img = document.getElementById('my-screenshot');
img.setAttribute('src', frame.dataUri);
// Upload the image...
var formData = new FormData();
formData.append('file', frame.blob, 'my-screenshot.' + frame.format);
// ...with plain JS
var request = new XMLHttpRequest();
request.open('POST', '/api/upload', true);
request.setRequestHeader('Content-Type', 'application/multipart/form-data; charset=UTF-8');
request.send(formData);
// ...or with jQuery
$.ajax({
url: '/api/upload',
method: 'POST',
data: formData,
processData: false,
contentType: false
});Tested on current Chrome and Firefox.
source (element or string, mandatory) Source video. If string, id of the element.
format (string, optional) Output image format. Can be either png or jpeg. png is the default.
quality (number, optional) A Number between 0 and 1 indicating image quality if the requested type is image/jpeg or image/webp. The default value is 0.92.
- Object with
blob,dataUri, andformatproperties if the capture succeeded falseif the capture failed.
Image blob can be easily uploaded to the server using XHR2 FormData API.
Image data URI can be easily set as <img> src attribute to show the captured image.
MIT